One of the driving forces behind the US stock market bull run is share buybacks. For example, with Apple, the largest buyer of Apple stock isn't Warren Buffett or sovereign wealth funds, but Apple itself. Many other excellent companies follow the same pattern.
Returning to DeFi protocols, many are now quite profitable and expanding rapidly. The key is that those truly willing to buy back their own tokens will become the largest buyers of their own tokens in the future, which will likely improve the market.